Which outcome occurs when a high-voltage circuit breaker attempts to interrupt a capacitive charging current?

💡 Explanation

When interrupting capacitive current, the circuit breaker forces current to zero instantaneously, resulting in a rapid rate of rise of recovery voltage (RRRV) across the breaker contacts, which can exceed the dielectric withstand. Therefore dielectric breakdown occurs, rather than escalation, welding or resonance, which require inductive loads or different current profiles.

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